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</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/iostream.html" title="cpp/header/iostream"><tt>&lt;iostream&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/ios.html" title="cpp/header/ios"><tt>&lt;ios&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/streambuf.html" title="cpp/header/streambuf"><tt>&lt;streambuf&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/istream.html" title="cpp/header/istream"><tt>&lt;istream&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/ostream.html" title="cpp/header/ostream"><tt>&lt;ostream&gt;</tt></a>
</td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="header/iomanip.html" title="cpp/header/iomanip"><tt>&lt;iomanip&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/sstream.html" title="cpp/header/sstream"><tt>&lt;sstream&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/fstream.html" title="cpp/header/fstream"><tt>&lt;fstream&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/cstdio.html" title="cpp/header/cstdio"><tt>&lt;cstdio&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/cinttypes.html" title="cpp/header/cinttypes"><tt>&lt;cinttypes&gt;</tt></a>
</td></tr>
</table></div></td>
</tr>
<tr class="t-nv-h1"><td colspan="5"> Regular expressions</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="header/regex.html" title="cpp/header/regex"><tt>&lt;regex&gt;</tt></a>
</td></tr>
</table></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Thread support</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="header/thread.html" title="cpp/header/thread"><tt>&lt;thread&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/mutex.html" title="cpp/header/mutex"><tt>&lt;mutex&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/atomic.html" title="cpp/header/atomic"><tt>&lt;atomic&gt;</tt></a>
</td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="header/shared_mutex.html" title="cpp/header/shared mutex"><tt>&lt;shared_mutex&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/condition_variable.html" title="cpp/header/condition variable"><tt>&lt;condition_variable&gt;</tt></a>
</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="header/future.html" title="cpp/header/future"><tt>&lt;future&gt;</tt></a>
</td></tr>
</table></div></td>
</tr>
</table></div>
</div>
<div></div>
</div></div>
</div>
<div class="t-navbar-sep"> </div>
</div>
<p>The interface of C++ standard library is defined by the following collection of header files.
</p>
<table class="t-dsc-begin">


<tr>
<td colspan="2"> <table id="toc" class="toc"><tr><td>
<div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1">
<a href="header.html#Utilities_library"><span class="tocnumber">1</span> <span class="toctext">Utilities library</span></a>
<ul>
<li class="toclevel-2"><a href="header.html#Dynamic_memory_management"><span class="tocnumber">1.1</span> <span class="toctext">Dynamic memory management</span></a></li>
<li class="toclevel-2"><a href="header.html#Numeric_limits"><span class="tocnumber">1.2</span> <span class="toctext">Numeric limits</span></a></li>
<li class="toclevel-2"><a href="header.html#Error_handling"><span class="tocnumber">1.3</span> <span class="toctext">Error handling</span></a></li>
</ul>
</li>
<li class="toclevel-1"><a href="header.html#Strings_library"><span class="tocnumber">2</span> <span class="toctext">Strings library</span></a></li>
<li class="toclevel-1"><a href="header.html#Containers_library"><span class="tocnumber">3</span> <span class="toctext">Containers library</span></a></li>
<li class="toclevel-1"><a href="header.html#Algorithms_library"><span class="tocnumber">4</span> <span class="toctext">Algorithms library</span></a></li>
<li class="toclevel-1"><a href="header.html#Iterators_library"><span class="tocnumber">5</span> <span class="toctext">Iterators library</span></a></li>
<li class="toclevel-1"><a href="header.html#Numerics_library"><span class="tocnumber">6</span> <span class="toctext">Numerics library</span></a></li>
<li class="toclevel-1"><a href="header.html#Input.2Foutput_library"><span class="tocnumber">7</span> <span class="toctext">Input/output library</span></a></li>
<li class="toclevel-1"><a href="header.html#Localization_library"><span class="tocnumber">8</span> <span class="toctext">Localization library</span></a></li>
<li class="toclevel-1"><a href="header.html#Regular_Expressions_library"><span class="tocnumber">9</span> <span class="toctext">Regular Expressions library</span></a></li>
<li class="toclevel-1"><a href="header.html#Atomic_Operations_library"><span class="tocnumber">10</span> <span class="toctext">Atomic Operations library</span></a></li>
<li class="toclevel-1"><a href="header.html#Thread_support_library"><span class="tocnumber">11</span> <span class="toctext">Thread support library</span></a></li>
<li class="toclevel-1"><a href="header.html#Experimental_libraries"><span class="tocnumber">12</span> <span class="toctext">Experimental libraries</span></a></li>
<li class="toclevel-1"><a href="header.html#C_compatibility_headers"><span class="tocnumber">13</span> <span class="toctext">C compatibility headers</span></a></li>
<li class="toclevel-1"><a href="header.html#Deprecated_headers"><span class="tocnumber">14</span> <span class="toctext">Deprecated headers</span></a></li>
<li class="toclevel-1 tocsection-1"><a href="header.html#See_also"><span class="tocnumber">15</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3> <span class="mw-headline" id="Utilities_library">Utilities library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdlib.html" title="cpp/header/cstdlib"><tt>&lt;cstdlib&gt;</tt></a></b></code>
</td>
<td> General purpose utilities: <a href="utility/program.html" title="cpp/utility/program"> program control</a>, <a href="memory/c.html" title="cpp/memory/c"> dynamic memory allocation</a>, <a href="numeric/random.html" title="cpp/numeric/random"> random numbers</a>, <a href="algorithm.html" title="cpp/algorithm"> sort and search</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/csignal.html" title="cpp/header/csignal"><tt>&lt;csignal&gt;</tt></a></b></code>
</td>
<td> <a href="utility/program.html" title="cpp/utility/program"> Functions and macro constants for signal management</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/csetjmp.html" title="cpp/header/csetjmp"><tt>&lt;csetjmp&gt;</tt></a></b></code>
</td>
<td> <a href="utility/program/setjmp.html" title="cpp/utility/program/setjmp"> Macro (and function) that saves (and jumps) to an execution context</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdarg.html" title="cpp/header/cstdarg"><tt>&lt;cstdarg&gt;</tt></a></b></code>
</td>
<td> <a href="utility/variadic.html" title="cpp/utility/variadic"> Handling of variable length argument lists</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/typeinfo.html" title="cpp/header/typeinfo"><tt>&lt;typeinfo&gt;</tt></a></b></code>
</td>
<td> <a href="types.html" title="cpp/types"> Runtime type information utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/typeindex.html" title="cpp/header/typeindex"><tt>&lt;typeindex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="types/type_index.html" title="cpp/types/type index">std::type_index</a></span>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/type_traits.html" title="cpp/header/type traits"><tt>&lt;type_traits&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="types.html" title="cpp/types">Compile-time type information</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/bitset.html" title="cpp/header/bitset"><tt>&lt;bitset&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="utility/bitset.html" title="cpp/utility/bitset">std::bitset</a></span> class template
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/functional.html" title="cpp/header/functional"><tt>&lt;functional&gt;</tt></a></b></code>
</td>
<td> <a href="utility/functional.html" title="cpp/utility/functional"> Function objects</a>, designed for use with the <a href="algorithm.html" title="cpp/algorithm"> standard algorithms</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/utility.html" title="cpp/header/utility"><tt>&lt;utility&gt;</tt></a></b></code>
</td>
<td> Various <a href="utility.html" title="cpp/utility"> utility components</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ctime.html" title="cpp/header/ctime"><tt>&lt;ctime&gt;</tt></a></b></code>
</td>
<td> <a href="chrono/c.html" title="cpp/chrono/c"> C-style time/date utilites</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/chrono.html" title="cpp/header/chrono"><tt>&lt;chrono&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="chrono.html" title="cpp/chrono"> C++ time utilites</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstddef.html" title="cpp/header/cstddef"><tt>&lt;cstddef&gt;</tt></a></b></code>
</td>
<td> <a href="types.html" title="cpp/types"> typedefs for types such as size_t, NULL and others</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/initializer_list.html" title="cpp/header/initializer list"><tt>&lt;initializer_list&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="utility/initializer_list.html" title="cpp/utility/initializer list">std::initializer_list</a></span> class template
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/tuple.html" title="cpp/header/tuple"><tt>&lt;tuple&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="utility/tuple.html" title="cpp/utility/tuple">std::tuple</a></span> class template
</td>
</tr>



<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Dynamic_memory_management"> Dynamic memory management </span>
</h5>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/new.html" title="cpp/header/new"><tt>&lt;new&gt;</tt></a></b></code>
</td>
<td> <a href="memory/new.1.html" title="cpp/memory/new"> Low-level memory management utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/memory.html" title="cpp/header/memory"><tt>&lt;memory&gt;</tt></a></b></code>
</td>
<td> <a href="memory.html" title="cpp/memory"> Higher level memory management utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/scoped_allocator.html" title="cpp/header/scoped allocator"><tt>&lt;scoped_allocator&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="memory/scoped_allocator_adaptor.html" title="cpp/memory/scoped allocator adaptor"> Nested allocator class </a>
</td>
</tr>



<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Numeric_limits"> Numeric limits </span>
</h5>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/climits.html" title="cpp/header/climits"><tt>&lt;climits&gt;</tt></a></b></code>
</td>
<td> <a href="types/climits.1.html" title="cpp/types/climits"> limits of integral types</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cfloat.html" title="cpp/header/cfloat"><tt>&lt;cfloat&gt;</tt></a></b></code>
</td>
<td> <a href="types/climits.1.html" title="cpp/types/climits"> limits of float types</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdint.html" title="cpp/header/cstdint"><tt>&lt;cstdint&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  <a href="types/integer.html" title="cpp/types/integer"> fixed-size types</a> and <a href="types/climits.1.html" title="cpp/types/climits"> limits of other types</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cinttypes.html" title="cpp/header/cinttypes"><tt>&lt;cinttypes&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  <a href="types/integer.html" title="cpp/types/integer"> formatting macros </a>, <code>intmax_t</code> and <code>uintmax_t</code> math and conversions
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/limits.html" title="cpp/header/limits"><tt>&lt;limits&gt;</tt></a></b></code>
</td>
<td> <a href="types/numeric_limits.1.html" title="cpp/types/numeric limits"> standardized way to query properties of fundamental types</a>
</td>
</tr>



<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Error_handling"> Error handling </span>
</h5>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/exception.html" title="cpp/header/exception"><tt>&lt;exception&gt;</tt></a></b></code>
</td>
<td> <a href="error.html" title="cpp/error"> Exception handling utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/stdexcept.html" title="cpp/header/stdexcept"><tt>&lt;stdexcept&gt;</tt></a></b></code>
</td>
<td> <a href="error.html" title="cpp/error"> Standard exception objects</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cassert.html" title="cpp/header/cassert"><tt>&lt;cassert&gt;</tt></a></b></code>
</td>
<td> <a href="error/assert.html" title="cpp/error/assert"> Conditionally compiled macro that compares its argument to zero</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/system_error.html" title="cpp/header/system error"><tt>&lt;system_error&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="error/error_code.html" title="cpp/error/error code"> defines std::error_code, a platform-dependent error code</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cerrno.html" title="cpp/header/cerrno"><tt>&lt;cerrno&gt;</tt></a></b></code>
</td>
<td> <a href="error.html" title="cpp/error"> Macro containing the last error number</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Strings_library">Strings library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cctype.html" title="cpp/header/cctype"><tt>&lt;cctype&gt;</tt></a></b></code>
</td>
<td> <a href="string/byte.html" title="cpp/string/byte"> functions to determine the type contained in character data</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cwctype.html" title="cpp/header/cwctype"><tt>&lt;cwctype&gt;</tt></a></b></code>
</td>
<td> <a href="string/wide.html" title="cpp/string/wide"> functions for determining the type of wide character data </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstring.html" title="cpp/header/cstring"><tt>&lt;cstring&gt;</tt></a></b></code>
</td>
<td> various <a href="string/byte.html" title="cpp/string/byte"> narrow character string handling functions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cwchar.html" title="cpp/header/cwchar"><tt>&lt;cwchar&gt;</tt></a></b></code>
</td>
<td> various <a href="string/wide.html" title="cpp/string/wide"> wide </a> and <a href="string/multibyte.html" title="cpp/string/multibyte"> multibyte</a> string handling functions
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cuchar.html" title="cpp/header/cuchar"><tt>&lt;cuchar&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> C-style <a href="string/multibyte.html" title="cpp/string/multibyte"> Unicode character conversion functions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/string.html" title="cpp/header/string"><tt>&lt;string&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="string/basic_string.html" title="cpp/string/basic string">std::basic_string</a></span> class template
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Containers_library">Containers library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/array.html" title="cpp/header/array"><tt>&lt;array&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="container/array.html" title="cpp/container/array">std::array</a></span> container
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/vector.html" title="cpp/header/vector"><tt>&lt;vector&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/vector.html" title="cpp/container/vector">std::vector</a></span> container
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/deque.html" title="cpp/header/deque"><tt>&lt;deque&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/deque.html" title="cpp/container/deque">std::deque</a></span> container
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/list.html" title="cpp/header/list"><tt>&lt;list&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/list.html" title="cpp/container/list">std::list</a></span> container
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/forward_list.html" title="cpp/header/forward list"><tt>&lt;forward_list&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="container/forward_list.html" title="cpp/container/forward list">std::forward_list</a></span> container
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/set.html" title="cpp/header/set"><tt>&lt;set&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/set.html" title="cpp/container/set">std::set</a></span> and <span class="t-lc"><a href="container/multiset.html" title="cpp/container/multiset">std::multiset</a></span> associative containers
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/map.html" title="cpp/header/map"><tt>&lt;map&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/map.html" title="cpp/container/map">std::map</a></span> and <span class="t-lc"><a href="container/multimap.html" title="cpp/container/multimap">std::multimap</a></span> associative containers
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/unordered_set.html" title="cpp/header/unordered set"><tt>&lt;unordered_set&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="container/unordered_set.html" title="cpp/container/unordered set">std::unordered_set</a></span> and <span class="t-lc"><a href="container/unordered_multiset.html" title="cpp/container/unordered multiset">std::unordered_multiset</a></span> unordered associative containers
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/unordered_map.html" title="cpp/header/unordered map"><tt>&lt;unordered_map&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="container/unordered_map.html" title="cpp/container/unordered map">std::unordered_map</a></span> and <span class="t-lc"><a href="container/unordered_multimap.html" title="cpp/container/unordered multimap">std::unordered_multimap</a></span> unordered associative containers
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/stack.html" title="cpp/header/stack"><tt>&lt;stack&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/stack.html" title="cpp/container/stack">std::stack</a></span> container adaptor
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/queue.html" title="cpp/header/queue"><tt>&lt;queue&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="container/queue.html" title="cpp/container/queue">std::queue</a></span> and <span class="t-lc"><a href="container/priority_queue.html" title="cpp/container/priority queue">std::priority_queue</a></span> container adaptors
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Algorithms_library">Algorithms library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/algorithm.html" title="cpp/header/algorithm"><tt>&lt;algorithm&gt;</tt></a></b></code>
</td>
<td> <a href="algorithm.html" title="cpp/algorithm"> Algorithms that operate on containers</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Iterators_library">Iterators library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/iterator.html" title="cpp/header/iterator"><tt>&lt;iterator&gt;</tt></a></b></code>
</td>
<td> <a href="iterator.html" title="cpp/iterator"> Container iterators</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Numerics_library">Numerics library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cmath.html" title="cpp/header/cmath"><tt>&lt;cmath&gt;</tt></a></b></code>
</td>
<td> <a href="numeric/math.html" title="cpp/numeric/math"> Common mathematics functions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/complex.html" title="cpp/header/complex"><tt>&lt;complex&gt;</tt></a></b></code>
</td>
<td> <a href="numeric/complex.html" title="cpp/numeric/complex"> Complex number type</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/valarray.html" title="cpp/header/valarray"><tt>&lt;valarray&gt;</tt></a></b></code>
</td>
<td> <a href="numeric/valarray.html" title="cpp/numeric/valarray"> Class for representing and manipulating arrays of values</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/random.html" title="cpp/header/random"><tt>&lt;random&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="numeric/random.html" title="cpp/numeric/random"> Random number generators and distributions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/numeric.html" title="cpp/header/numeric"><tt>&lt;numeric&gt;</tt></a></b></code>
</td>
<td> <a href="numeric.html" title="cpp/numeric"> Numeric operations on values in containers</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ratio.html" title="cpp/header/ratio"><tt>&lt;ratio&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="numeric/ratio.html" title="cpp/numeric/ratio"> Compile-time rational arithmetic</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cfenv.html" title="cpp/header/cfenv"><tt>&lt;cfenv&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="numeric/fenv.html" title="cpp/numeric/fenv"> Floating-point environment</a> access functions
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Input.2Foutput_library">Input/output library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/iosfwd.html" title="cpp/header/iosfwd"><tt>&lt;iosfwd&gt;</tt></a></b></code>
</td>
<td> forward declarations of all classes in the input/output library
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ios.html" title="cpp/header/ios"><tt>&lt;ios&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/ios_base.html" title="cpp/io/ios base">std::ios_base</a></span> class, <span class="t-lc"><a href="io/basic_ios.html" title="cpp/io/basic ios">std::basic_ios</a></span> class template and several typedefs
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/istream.html" title="cpp/header/istream"><tt>&lt;istream&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/basic_istream.html" title="cpp/io/basic istream">std::basic_istream</a></span> class template and several typedefs
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ostream.html" title="cpp/header/ostream"><tt>&lt;ostream&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/basic_ostream.html" title="cpp/io/basic ostream">std::basic_ostream</a></span>, <span class="t-lc"><a href="io/basic_iostream.html" title="cpp/io/basic iostream">std::basic_iostream</a></span> class templates and several typedefs
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/iostream.html" title="cpp/header/iostream"><tt>&lt;iostream&gt;</tt></a></b></code>
</td>
<td> several standard stream objects
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/fstream.html" title="cpp/header/fstream"><tt>&lt;fstream&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/basic_fstream.html" title="cpp/io/basic fstream">std::basic_fstream</a></span>, <span class="t-lc"><a href="io/basic_ifstream.html" title="cpp/io/basic ifstream">std::basic_ifstream</a></span>, <span class="t-lc"><a href="io/basic_ofstream.html" title="cpp/io/basic ofstream">std::basic_ofstream</a></span> class templates and several typedefs
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/sstream.html" title="cpp/header/sstream"><tt>&lt;sstream&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/basic_stringstream.html" title="cpp/io/basic stringstream">std::basic_stringstream</a></span>, <span class="t-lc"><a href="io/basic_istringstream.html" title="cpp/io/basic istringstream">std::basic_istringstream</a></span>, <span class="t-lc"><a href="io/basic_ostringstream.html" title="cpp/io/basic ostringstream">std::basic_ostringstream</a></span> class templates and several typedefs
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/strstream.html" title="cpp/header/strstream"><tt>&lt;strstream&gt;</tt></a></b></code>
</td>
<td> <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="io/strstream.html"><span class="kw1443">std::<span class="me2">strstream</span></span></a></span></span>, <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="io/istrstream.html"><span class="kw1441">std::<span class="me2">istrstream</span></span></a></span></span>, <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="io/ostrstream.html"><span class="kw1442">std::<span class="me2">ostrstream</span></span></a></span></span><span class="t-mark">(deprecated)</span>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/iomanip.html" title="cpp/header/iomanip"><tt>&lt;iomanip&gt;</tt></a></b></code>
</td>
<td> <a href="io/manip.html" title="cpp/io/manip"> Helper functions to control the format or input and output</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/streambuf.html" title="cpp/header/streambuf"><tt>&lt;streambuf&gt;</tt></a></b></code>
</td>
<td> <span class="t-lc"><a href="io/basic_streambuf.html" title="cpp/io/basic streambuf">std::basic_streambuf</a></span> class template
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdio.html" title="cpp/header/cstdio"><tt>&lt;cstdio&gt;</tt></a></b></code>
</td>
<td> <a href="io/c.html" title="cpp/io/c"> C-style input-output functions</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Localization_library">Localization library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/locale.html" title="cpp/header/locale"><tt>&lt;locale&gt;</tt></a></b></code>
</td>
<td> <a href="locale.html" title="cpp/locale"> Localization utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/clocale.html" title="cpp/header/clocale"><tt>&lt;clocale&gt;</tt></a></b></code>
</td>
<td> <a href="locale.html" title="cpp/locale"> C localization utilities</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/codecvt.html" title="cpp/header/codecvt"><tt>&lt;codecvt&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="locale.html" title="cpp/locale"> Unicode conversion facilities</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Regular_Expressions_library">Regular Expressions library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/regex.html" title="cpp/header/regex"><tt>&lt;regex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="regex.html" title="cpp/regex"> Classes, algorithms and iterators to support regular expression processing  </a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Atomic_Operations_library">Atomic Operations library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/atomic.html" title="cpp/header/atomic"><tt>&lt;atomic&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="atomic.html" title="cpp/atomic"> Atomic operations library</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Thread_support_library">Thread support library</span>
</h3>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/thread.html" title="cpp/header/thread"><tt>&lt;thread&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <span class="t-lc"><a href="thread/thread.html" title="cpp/thread/thread">std::thread</a></span> class and <a href="thread.html" title="cpp/thread"> supporting functions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/mutex.html" title="cpp/header/mutex"><tt>&lt;mutex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="thread.html" title="cpp/thread"> mutual exclusion primitives</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/shared_mutex.html" title="cpp/header/shared mutex"><tt>&lt;shared_mutex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx14">(since C++14)</span>
</td>
<td> <a href="thread.html" title="cpp/thread"> shared mutual exclusion primitives</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/future.html" title="cpp/header/future"><tt>&lt;future&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="thread.html" title="cpp/thread"> primitives for asynchronous computations</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/condition_variable.html" title="cpp/header/condition variable"><tt>&lt;condition_variable&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td> <a href="thread.html" title="cpp/thread">thread waiting conditions</a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Experimental_libraries">Experimental libraries</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/algorithm (page does not exist)"><tt>&lt;experimental/algorithm&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a> and <a href="experimental/parallelism.html" title="cpp/experimental/parallelism"> Extensions for Parallelism </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/experimental/any.html" title="cpp/header/experimental/any"><tt>&lt;experimental/any&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/chrono (page does not exist)"><tt>&lt;experimental/chrono&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/deque (page does not exist)"><tt>&lt;experimental/deque&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/execution policy (page does not exist)"><tt>&lt;experimental/execution_policy&gt;</tt></a></b></code> <span class="t-mark-rev t-since-fs-ts t-mark-ts">(parallelism TS)</span>
</td>
<td> <a href="experimental/parallelism.html" title="cpp/experimental/parallelism"> Extensions for Parallelism </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/exception list (page does not exist)"><tt>&lt;experimental/exception_list&gt;</tt></a></b></code> <span class="t-mark-rev t-since-fs-ts t-mark-ts">(parallelism TS)</span>
</td>
<td> <a href="experimental/parallelism.html" title="cpp/experimental/parallelism"> Extensions for Parallelism </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/experimental/filesystem.html" title="cpp/header/experimental/filesystem"><tt>&lt;experimental/filesystem&gt;</tt></a></b></code> <span class="t-mark-rev t-since-fs-ts t-mark-ts">(filesystem TS)</span>
</td>
<td> <a href="experimental/fs.html" title="cpp/experimental/fs"> Filesystem library</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/forward list (page does not exist)"><tt>&lt;experimental/forward_list&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/future (page does not exist)"><tt>&lt;experimental/future&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/list (page does not exist)"><tt>&lt;experimental/list&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/functional (page does not exist)"><tt>&lt;experimental/functional&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/map (page does not exist)"><tt>&lt;experimental/map&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/memory (page does not exist)"><tt>&lt;experimental/memory&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/experimental/memory_resource.html" title="cpp/header/experimental/memory resource"><tt>&lt;experimental/memory_resource&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/numeric (page does not exist)"><tt>&lt;experimental/numeric&gt;</tt></a></b></code> <span class="t-mark-rev t-since-fs-ts t-mark-ts">(parallelism TS)</span>
</td>
<td> <a href="experimental/parallelism.html" title="cpp/experimental/parallelism"> Extensions for Parallelism </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/experimental/optional.html" title="cpp/header/experimental/optional"><tt>&lt;experimental/optional&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/ratio (page does not exist)"><tt>&lt;experimental/ratio&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/regex (page does not exist)"><tt>&lt;experimental/regex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/set (page does not exist)"><tt>&lt;experimental/set&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/string (page does not exist)"><tt>&lt;experimental/string&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/experimental/string_view.html" title="cpp/header/experimental/string view"><tt>&lt;experimental/string_view&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/system error (page does not exist)"><tt>&lt;experimental/system_error&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/tuple (page does not exist)"><tt>&lt;experimental/tuple&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/type traits (page does not exist)"><tt>&lt;experimental/type_traits&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/unordered map (page does not exist)"><tt>&lt;experimental/unordered_map&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/unordered set (page does not exist)"><tt>&lt;experimental/unordered_set&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/utility (page does not exist)"><tt>&lt;experimental/utility&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="http%3A//en.cppreference.com/mwiki/index.php" class="new" title="cpp/header/experimental/vector (page does not exist)"><tt>&lt;experimental/vector&gt;</tt></a></b></code> <span class="t-mark-rev t-since-libfund-ts t-mark-ts">(library fundamentals TS)</span>
</td>
<td> <a href="experimental/memory.html" title="cpp/experimental/lib extensions"> Standard libraries extensions</a>
</td>
</tr>




<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="C_compatibility_headers">C compatibility headers</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td> <code><b><a href="header/ciso646.html" title="cpp/header/ciso646"><tt>&lt;ciso646&gt;</tt></a></b></code>
</td>
<td>  empty header. The macros that appear in <code>iso646.h</code> in C are keywords in C++
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ccomplex.html" title="cpp/header/ccomplex"><tt>&lt;ccomplex&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  simply includes the header &lt;complex&gt;
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/ctgmath.html" title="cpp/header/ctgmath"><tt>&lt;ctgmath&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  simply includes the headers &lt;ccomplex&gt; and &lt;cmath&gt;: the overloads equivalent to the contents of the C header <code>tgmath.h</code> are already provided by &lt;cmath&gt; and &lt;complex&gt;
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdalign.html" title="cpp/header/cstdalign"><tt>&lt;cstdalign&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  defines one <a href="types.html" title="cpp/types">compatibility macro constant </a>
</td>
</tr>


<tr class="t-dsc">
<td> <code><b><a href="header/cstdbool.html" title="cpp/header/cstdbool"><tt>&lt;cstdbool&gt;</tt></a></b></code> <span class="t-mark-rev t-since-cxx11">(since C++11)</span>
</td>
<td>  defines one <a href="types.html" title="cpp/types">compatibility macro constant </a>
</td>
</tr>



<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Deprecated_headers">Deprecated headers</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td> <code><b>&lt;assert.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cassert.html" title="cpp/header/cassert"><tt>&lt;cassert&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;complex.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/ccomplex.html" title="cpp/header/ccomplex"><tt>&lt;ccomplex&gt;</tt></a>  is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;ctype.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cctype.html" title="cpp/header/cctype"><tt>&lt;cctype&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;errno.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cerrno.html" title="cpp/header/cerrno"><tt>&lt;cerrno&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;fenv.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cfenv.html" title="cpp/header/cfenv"><tt>&lt;cfenv&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;float.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cfloat.html" title="cpp/header/cfloat"><tt>&lt;cfloat&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;inttypes.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cinttypes.html" title="cpp/header/cinttypes"><tt>&lt;cinttypes&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;iso646.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/ciso646.html" title="cpp/header/ciso646"><tt>&lt;ciso646&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;limits.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/climits.html" title="cpp/header/climits"><tt>&lt;climits&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;locale.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/clocale.html" title="cpp/header/clocale"><tt>&lt;clocale&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;math.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cmath.html" title="cpp/header/cmath"><tt>&lt;cmath&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;setjmp.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/csetjmp.html" title="cpp/header/csetjmp"><tt>&lt;csetjmp&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;signal.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/csignal.html" title="cpp/header/csignal"><tt>&lt;csignal&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdalign.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdalign.html" title="cpp/header/cstdalign"><tt>&lt;cstdalign&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdarg.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdarg.html" title="cpp/header/cstdarg"><tt>&lt;cstdarg&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdbool.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdbool.html" title="cpp/header/cstdbool"><tt>&lt;cstdbool&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stddef.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstddef.html" title="cpp/header/cstddef"><tt>&lt;cstddef&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdint.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdint.html" title="cpp/header/cstdint"><tt>&lt;cstdint&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdio.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdio.html" title="cpp/header/cstdio"><tt>&lt;cstdio&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;stdlib.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstdlib.html" title="cpp/header/cstdlib"><tt>&lt;cstdlib&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;string.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cstring.html" title="cpp/header/cstring"><tt>&lt;cstring&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;tgmath.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/ctgmath.html" title="cpp/header/ctgmath"><tt>&lt;ctgmath&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;time.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/ctime.html" title="cpp/header/ctime"><tt>&lt;ctime&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;uchar.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cuchar.html" title="cpp/header/cuchar"><tt>&lt;cuchar&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;wchar.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cwchar.html" title="cpp/header/cwchar"><tt>&lt;cwchar&gt;</tt></a> is placed in global namespace
</td>
</tr>


<tr class="t-dsc">
<td> <code><b>&lt;wctype.h&gt;</b></code> <span class="t-mark">(deprecated)</span>
</td>
<td>  behaves as if each name from <a href="header/cwctype.html" title="cpp/header/cwctype"><tt>&lt;cwctype&gt;</tt></a> is placed in global namespace
</td>
</tr>


</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see">
<span><a href="../c/header.html" title="c/header">C documentation</a></span> for <span class="t-dsc-see-tt"><span>C Standard Library header files</span></span>
</div>
</td>
</tr>

</table>

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